But for Djokovic, it is back to the drawing board, and possibly the hospital to sort out the injury to his elbow

The Serb frequently grimaced in pain and lesser players would have thrown in the towel, especially after fightbacks in the opening two sets ended in him losing them both and he fell a break behind in the third.

Chung described how his 'dreams had come true' after he disposed of Djokovic

Tennis was the winner in a high quality, compelling match. And Tennys was the winner in the Margaret Court Arena.

That’s not a misprint. Tennys Sandgren, the American No10, had never won a main draw match at a Grand Slam before this event.

Now the 26-year-old from Tennessee (you couldn’t make this up), who is named after his great-grandfather, will meet Chung for a place in the semi-finals after a five-set win over No 5 seed Dominic Thiem.

Novak Djokovic dances on treadmill ahead of Australian Open 2018 opener